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            <h5 class="mb-0 text-white">黑马前端</h5>
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        <div class="page-title mb-3">
          <div class="row justify-content-between align-items-center">
            <div class="col-md-6 mb-3 mb-md-0">
              <h5 class="h3 font-weight-400 mb-0 text-white">Students</h5>
              <span class="text-sm text-white opacity-8">一共有 <b class="total">0</b> 位学员</span>
            </div>
            <div class="col-md-6 d-flex align-items-center justify-content-between justify-content-md-end">
              <a id="openModal" href="javascript:;" class="btn btn-sm btn-white btn-icon-only rounded-circle ml-4">
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          <div class="col">
            <div class="card card-fluid">
              <div class="table-responsive" style="min-height: 1000px">
                <table class="table align-items-center">
                  <thead>
                    <tr>
                      <th>姓名</th>
                      <th>年龄</th>
                      <th>性别</th>
                      <th>组号</th>
                      <th>期望薪资</th>
                      <th>就业薪资</th>
                      <th>籍贯</th>
                      <th>操作</th>
                    </tr>
                  </thead>
                  <tbody class="list">
                    <!-- <tr>
                      <td>张杰</td>
                      <td>20</td>
                      <td>男</td>
                      <td>第2组</td>
                      <td>10000</td>
                      <td>13000</td>
                      <td>北京北京市东城区</td>
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                        <a href="javascript:;" class="text-success mr-3"><i class="bi bi-pen"></i></a>
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  </div>
  <!-- add Modal -->
  <div class="modal fade" id="modal">
    <div class="modal-dialog modal-lg">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title">添加/编辑学员</h5>
          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
        </div>
        <div class="modal-body">
          <form id="form" class="g-3 row" autocomplete="off" novalidate>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">姓名：</label>
                <input type="text" name="name" class="form-control" placeholder="请输入姓名" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">性别：</label>
                <div class="input">
                  <div class="form-check d-inline-block">
                    <input value="0" checked id="cb01" class="form-check-input" type="radio" name="gender" />
                    <label for="cb01" class="form-check-label">男</label>
                  </div>
                  <div class="form-check d-inline-block">
                    <input value="1" id="cb02" class="form-check-input" type="radio" name="gender" />
                    <label for="cb02" class="form-check-label">女</label>
                  </div>
                </div>
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">年龄：</label>
                <input type="text" name="age" class="form-control" placeholder="请输入年龄" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">组号：</label>
                <input type="text" name="group" class="form-control" placeholder="请输入1-8组号" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">期望薪资：</label>
                <input type="text" name="hope_salary" class="form-control" placeholder="请输入期望薪资" />
              </div>
            </div>
            <div class="col-sm-6">
              <div class="form-group">
                <label class="input-group-label">就业薪资：</label>
                <input type="text" name="salary" class="form-control" placeholder="请输入就业薪资" />
              </div>
            </div>
            <div class="col-sm-12">
              <div class="form-group">
                <label class="input-group-label">籍贯：</label>
                <div class="input pl-0">
                  <select class="form-select custom-select" name="province">
                    <option value="">--省份--</option>
                  </select>
                  <select class="form-select custom-select" name="city">
                    <option value="">--城市--</option>
                  </select>
                  <select class="form-select custom-select" name="area">
                    <option value="">--地区--</option>
                  </select>
                </div>
              </div>
            </div>
          </form>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
          <button type="button" class="btn btn-blue" id="submit">确认</button>
        </div>
      </div>
    </div>
  </div>
  <script src="./bootstrap/bootstrap.min.js"></script>
  <script src="./lib/axios.js"></script>
  <script src="./lib/form-serialize.js"></script>
  <script src="./js/common.js"></script>
  <script>
    /************************ 一、渲染学生列表 ************************/
    // 渲染学生列表
    async function renderList() {
      // 获取学生数据
      const result = await axios({
        method: 'GET',
        url: '/students'
      })
      console.log('服务器响应回来的学生数据：', result)
      // 渲染学生数据
      const stuArr = result.data
      // console.log('学生数据：', stuArr)
      const stuStr = stuArr.map(item => {
        return `
          <tr>
            <td>${item.name}</td>
            <td>${item.age}</td>
            <td>${item.gender === 0 ? '男' : '女'}</td>
            <td>第${item.group}组</td>
            <td>${item.hope_salary}</td>
            <td>${item.salary}</td>
            <td>${item.province}${item.city}${item.area}</td>
            <td data-id='${item.id}'>
              <a href="javascript:;" class="text-success mr-3"><i class="bi bi-pen"></i></a>
              <a href="javascript:;" class="text-danger"><i class="bi bi-trash"></i></a>
            </td>
          </tr>
        `
      }).join('')
      document.querySelector('.list').innerHTML = stuStr

      // 总人数
      document.querySelector('.total').innerHTML = stuArr.length
    }
    renderList()

    /************************ 二、删除操作 ************************/
    // 事件委托
    document.querySelector('.list').addEventListener('click', async function(e) {
      if (e.target.classList.contains('bi-trash')) {
        // console.log('获取到对应学生的id：', e.target.parentNode.parentNode.dataset.id)
        const id = e.target.parentNode.parentNode.dataset.id
        if (!confirm('是否确定要删除此条学生信息？')) {
          return
        }
        try {
          const result = await axios({
            method: 'DELETE',
            url: `/students/${id}`
          })
          // 重新渲染数据
          renderList()
        } catch(err) {
          alert('学生信息删除失败！')
        }
      }
    })
  
    // 获取模态框盒子
    const modalbox = document.querySelector('#modal')
    // 模态框实例化
    const modalObj = new bootstrap.Modal(modalbox)
    /************************ 三、添加操作 ************************/
    // 3.1 点击添加弹出模态框
    document.querySelector('#openModal').addEventListener('click', function() {
      // 弹出模态框
      modalObj.show()
      // 给模态框盒子设置自定义属性，用来区分点击提交后是用来发送哪个请求
      modalbox.dataset.id = 'add'
      // 更改模态框标题
      document.querySelector('.modal-title').innerHTML = '添加学员'
      // 清空表单数据
      document.querySelector('form').reset()
    })

    // 3.2 省市区数据渲染
    // 获取省份下拉框
    const inputProvince =  document.querySelector('[name = province]')
    // 获取城市下拉框
    const inputCity = document.querySelector('[name = city]')
    // 获取地区下拉框
    const inputArea = document.querySelector('[name = area]')
    // 渲染省份数据
    async function getProvince() {
      // 获取省份数据
      const {data: pname} = await axios({
        method: 'GET',
        url: '/api/province'
      })
      console.log('获取到的省份数据：', pname)
      const pStr = pname.map(item => {
        return `
          <option value="${item}">${item}</option>
        `
      }).join('')
      inputProvince.innerHTML = `
        <option value="">--省份--</option> + ${pStr}
      `
    }
    getProvince()

    // 渲染城市数据
    inputProvince.addEventListener('change', async function() {
      // 获取到省份下拉框的value值
      const pname = this.value
      // 获取城市数据
      const {data: cname} = await axios({
        method: 'GET',
        url: '/api/city',
        params: {
          pname
        }
      })
      console.log('获取到的城市数据：', cname)
      const cStr = cname.map(item => {
        return `
          <option value="${item}">${item}</option>
        `
      }).join('')
      // 渲染城市数据
      inputCity.innerHTML = `
        <option value="">--城市--</option> + ${cStr}
      `
      // 清空地区下拉框的值
      inputArea.innerHTML = '<option value="">--地区--</option>'
    })

    // 渲染地区数据
    inputCity.addEventListener('change', async function() {
      // 获取城市下拉框的value值
      const cname = this.value
      // 获取城市下拉框的value值
      const pname = inputProvince.value
      // 获取地区数据
      const {data: aname} = await axios({
        method: 'GET',
        url: '/api/area',
        params: {
          cname,
          pname
        }
      })
      console.log('获取到的地区数据：', aname)
      const aStr = aname.map(item => {
        return `
          <option value="${item}">${item}</option>
        `
      })
      // 渲染数据到下拉框
      inputArea.innerHTML = `
        <option value="">--地区--</option> + ${aStr}
      `
    })
    
    
    // 3.3 确认按钮绑定事件
    document.querySelector('#submit').addEventListener('click',  async function() {
      // 获取表单信息
      const formData = serialize(document.querySelector('form'), {hash: true, empty: true})
      formData.age = +formData.age
      formData.gender = +formData.gender
      formData.hope_salary = +formData.hope_salary
      formData.salary = +formData.salary
      formData.group = +formData.group
      console.log(formData)
      if (modalbox.dataset.id === 'add') {
        try {
          await axios({
            method: 'POST',
            url: '/students',
            data: formData
          })
          // 关闭模态框
          modalObj.hide()
          // 重新渲染学生列表数据
          renderList()
          alert('添加学员成功')
        } catch(err) {
          alert('添加学员失败')
        }
      }
    })
  
    /************************ 四、修改操作 ************************/
    // 4.1 点击修改按钮弹出模态框 - 事件委托
    document.querySelector('.list').addEventListener('click', async function(e) {
      if (e.target.classList.contains('bi-pen')) {
        // 弹出模态框
        modalObj.show()
        // 获取当前点击编辑按钮对应学生的id
        const id = e.target.parentNode.parentNode.dataset.id
        // 给模态框设置自定义属性
        modalbox.dataset.id = id
        // 修改模态框的标题
        document.querySelector('.modal-title').innerHTML = '编辑学员'

        // 4.2 将学生数据回显
        // 获取对应学生的信息
        try {
          const {data: stuInfo} = await axios({
            method: 'GET',
            url: `/students/${id}`
          })
          console.log('编辑获取到的对应学生的信息：', stuInfo)
          // 数据回显到对应文本框
          // 获取到所有的有name属性的文本框
          const ipts = document.querySelectorAll('form [name]')
          // 将ipts伪数组转换为真数组
          const iptsArr = [...ipts]
          // 遍历数组
          iptsArr.forEach(item => {
            // item是表单内的每一个标签
            // 获取到每一个表单元素的name属性值
            const name = item.name
            if (name === 'gender') {
              document.querySelector(`input[value='${stuInfo.gender}']`).checked = true
            } else {
              item.value = stuInfo[name]
            }
          })

          // 获取城市数据并回显
          const { data: cname } = await axios({
            method: 'GET',
            url: '/api/city',
            params: {
              pname: stuInfo.province
            }
          })
          // console.log(cname)
          const cStr = cname.map(item => {
            return `
              <option value="${item}">${item}</option>
            `
          }).join('')
          inputCity.innerHTML = `
            <option value="">--城市--</option> + 
            ${cStr}
            `
          inputCity.value = stuInfo.city

          // 获取地区数据并回显
          const { data: aname } = await axios({
            method: 'GET',
            url: '/api/area',
            params: {
              pname: stuInfo.province,
              cname: stuInfo.city
            }
          })
          // console.log(aname)
          const aStr = aname.map(item => {
            return `
                <option value="${item}">${item}</option>
              `
          }).join('')
          inputArea.innerHTML = `
              <option value="">--地区--</option> + 
              ${aStr}
            `
          inputArea.value = stuInfo.area
        } catch(err) {
          alert('获取学生信息失败')
        }
      }
    })

    // 4.3 提交修改数据
    document.querySelector('#modal #submit').addEventListener('click', async function() {
        if (modalbox.dataset.id !== 'add') {
        // 获取表单信息
        const data = serialize(form, {hash: true, empty: true})
        data.age = +data.age
        data.gender = +data.gender
        data.hope_salary = +data.hope_salary
        data.salary = +data.salary
        data.group = +data.group
        try {
          await axios({
            method: 'PUT',
            url: `/students/${modalbox.dataset.id}`,
            data
          })
          // 隐藏模态框
          modalObj.hide()
          alert('学生信息修改成功')
          // 重新渲染
          renderList()
        } catch(err) {
            alert('学生信息修改失败')
          }
        }
      })
  </script>
</body>

</html>